28797154 has 4 divisors (see below), whose sum is σ = 43195734. Its totient is φ = 14398576.

The previous prime is 28797151. The next prime is 28797157. The reversal of 28797154 is 45179782.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28797151) and next prime (28797157).

It can be written as a sum of positive squares in only one way, i.e., 15642025 + 13155129 = 3955^2 + 3627^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28797154.

It is not an unprimeable number, because it can be changed into a prime (28797151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7199287 + ... + 7199290.

Almost surely, 2^28797154 is an apocalyptic number.

28797154 is a deficient number, since it is larger than the sum of its proper divisors (14398580).

28797154 is a wasteful number, since it uses less digits than its factorization.

28797154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14398579.

The product of its digits is 141120, while the sum is 43.

The square root of 28797154 is about 5366.2979790541. The cubic root of 28797154 is about 306.5136757885.

It can be divided in two parts, 2 and 8797154, that added together give a square (8797156 = 2966²).

The spelling of 28797154 in words is "twenty-eight million, seven hundred ninety-seven thousand, one hundred fifty-four".